package cn.xz.dao;

import cn.xz.entity.User2;

import java.util.List;

public interface IUser2Dao {
        int addUser(User2 user2);
        int deleteUser(User2 user2);
        int updateUser(User2 user2);
        User2 Longin(String username, String userpassword);
        User2 newLongin(String username,String userpassword,String useraddress);
        User2 alterLongin(String userpassword,String useraddress);



}
